Neurological Sciences

, Volume 36, Issue 8, pp 1533–1535 | Cite as

Trigeminal neuralgia or SUNA/SUNCT: a dilemma unresolved

  • Vimal Kumar PaliwalEmail author
  • Ravi Uniyal
  • Durgesh Kumar Gupta
  • Zafar Neyaz
Letter to the Editor

Dear Editor-in-Chief,

Short-lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT) and short-lasting unilateral neuralgiform headache with cranial autonomic features (SUNA) are rare primary headaches characterized by short-lasting unilateral orbito-temporal neuralgiform headache attacks with ipsilateral eye lid edema, ptosis, forehead flushing/sweating or rhinorrhoea. In addition to these autonomic features, SUNCT is associated with both conjunctival injection and tearing; whereas, SUNA may have tearing or conjunctival injection or none of them [1]. Since, SUNCT and SUNA have considerable overlap of autonomic features, SUNCT is considered as a subset of SUNA. However, trigeminal neuralgia (TN) that closely mimics SUNCT/SUNA is considered a different disorder [1]. Despite different nosologic entities, the clear etio-pathological divide between trigeminal neuralgia and SUNCT/SUNA are lacking. Herein, we present a patient with basilar artery ectasia who...


SUNCT Trigeminal neuralgia Refractory period Ectasia of vertebral artery 


Conflict of interest

Authors report that they have no conflict of interest.

Informed consent

Informed consent obtained from the patient.

Supplementary material

Supplementary material 1 Video 1: Video showing a patient with an ongoing SUNCT attack on right side resulting in right eye partial ptosis, eyelid edema, conjunctival injection and tearing (red circle). (MPG 6393 kb)


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Copyright information

© Springer-Verlag Italia 2015

Authors and Affiliations

  • Vimal Kumar Paliwal
    • 1
    Email author
  • Ravi Uniyal
    • 1
  • Durgesh Kumar Gupta
    • 1
  • Zafar Neyaz
    • 1
  1. 1.Department of Neurology and RadiologySanjay Gandhi Postgraduate Institute of Medical SciencesLucknowIndia

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